﻿package net.wangit.framework.util;

import javax.servlet.http.HttpServletRequest;

import net.wangit.context.LocalContext;


/**
 * Request工具类
 * 
 * @author watson Feb 14, 2010
 */
public class RequestUtil {

	public RequestUtil() {
	}

	public static String getIp() {
		return LocalContext.getLocalContext().getHttpServletRequest()
				.getRemoteAddr();
	}

	public String getIp(HttpServletRequest request) {
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
			ip = request.getHeader("Proxy-Client-IP");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
			ip = request.getHeader("WL-Proxy-Client-IP");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
			ip = request.getRemoteAddr();
		return ip;
	}
}
